EP3414477B1 - Dispositif de soupape électrique, en particulier pour appareils électroménagers - Google Patents

Dispositif de soupape électrique, en particulier pour appareils électroménagers Download PDF

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Publication number
EP3414477B1
EP3414477B1 EP17713074.7A EP17713074A EP3414477B1 EP 3414477 B1 EP3414477 B1 EP 3414477B1 EP 17713074 A EP17713074 A EP 17713074A EP 3414477 B1 EP3414477 B1 EP 3414477B1
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EP
European Patent Office
Prior art keywords
obturator
valve seat
valve device
electric valve
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP17713074.7A
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German (de)
English (en)
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EP3414477A1 (fr
Inventor
Giorgio Molino
Maurizio Rendesi
Paolo Ravedati
Paolo Da Pont
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elbi International SpA
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Elbi International SpA
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Priority to PL17713074T priority Critical patent/PL3414477T3/pl
Publication of EP3414477A1 publication Critical patent/EP3414477A1/fr
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Publication of EP3414477B1 publication Critical patent/EP3414477B1/fr
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1921—Control of temperature characterised by the use of electric means characterised by the type of controller using a thermal motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series

Definitions

  • the present invention relates to an electric valve device, used in particular, but not solely, in household appliances, such as washing machines or dishwashers.
  • the invention relates to an electric valve device of the type comprising
  • One object of the present invention is to provide an electric valve device adapted to overcome the drawback outlined above of solenoid valve devices according to the prior art.
  • Electric valve devices comprising first and second valve seats and corresponding first and second obturators are known from US 3 344 807 A , US 2005/279956 A1 , DE 10 2004 004708 B3 , US 2003/098074 A1 and JP 2007 032701 A .
  • an electric valve device according to claim 1 or claim 6.
  • This electric valve device comprises a hollow body, indicated collectively at 2, which in the exemplary embodiment illustrated comprises an upper element 2a and a lower element 2b, coupled together in a liquid-tight seal by the interposition of a sealing O-ring 3.
  • the 2nd and 3rd elements may be made for example of a molded plastic material.
  • the body 2 has two conduits 4 and 5, which may serve either as input or output for a flow of fluid, especially a liquid.
  • an upper valve seat 7 and a lower valve seat 8 are made with vertical space left between them.
  • the seats 7 and 8 are coaxial with each other.
  • the seats 7 and 8 are both made in the lower element 2b of the body 2.
  • a tubular formation 9 is made, which extends essentially upwards, coaxial with the seats 7 and 8. The upper end of the tubular formation 9 is closed, while the lower end is open and opens into the chamber 6.
  • a control coil or solenoid 10 made in a manner known per se with insulated electric wire, is mounted in a fixed position.
  • the leads of this coil or solenoid are connected to respective terminals 11 (only one of which is visible in the drawings), for example in the form of lamellar plugs, for connection to a control circuit (not shown).
  • a tubular extension 2c extends from the lower element 2a of the body 2.
  • a ferromagnetic member 12 of a substantially cylindrical general shape is mounted in a vertically movable manner.
  • the lower end of the member 12 forms a terminal head 12a, joined to the rest of the member 12 by a portion of reduced diameter, in the form of a neck, 12b.
  • the obturator assembly 13 comprises an upper body 14, the upper end of which is attached to the neck 12b of the member 12, and the lower end of which has an axial cavity directed upwards, in which the upper end of a second body 15 is planted by force, protruding downward in the direction of the conduit 5.
  • the body 14 in its intermediate portion has a protrusion 14a which extends radially outwards in the manner of a flange.
  • the body 14 has a peripheral annular groove in which a sealing ring member 17 in the form of a flat ring is engaged and held, intended to cooperate operationally, in the manner of an obturator, with the upper valve seat 7.
  • the lower distal end of the body 15 has a terminal formation 15a projecting radially outward.
  • a second sealing element 18 is engaged, intended to cooperate in the manner of an obturator, with the lower valve seat 8.
  • a helical spring 19 is interposed between said body 2 and the flange-like formation 14a of the body 14 which tends to push down the assembly formed by the member 12 and by the obturator assembly 13, towards the position of figure 1 , in which the obturators 17 and 18 obstruct the valve seats 7 and 8 associated with them respectively.
  • the obturator 18 is elastically deformed upward, as a result of its engagement with the valve seat 8, so as to be resiliently loaded against this seat. Consequently, if granules are "pinched" between the obturator 17 and the associated valve seat 7 so as to keep the assembly formed by the member 12 and the obturator assembly 13 slightly raised with respect to the nominal closed position of figure 1 , the obturator 18 is still able to ensure an effective sealing action against the associated valve seat 8.
  • the radial extension 17 of the obturator is such that its support surface against the associated valve seat 7 is lower than the extension of the contact surface between the obturator 18 and the associated valve seat 8. In this way, the probability that granules may be pinched between the obturator 17 and the valve seat 7 is reduced.
  • the electric valve device 1 In the de-energized condition of the control coil or solenoid 10, the electric valve device 1 assumes the closed condition illustrated in figure 1 .
  • the flange-like formation 14a of the obturator assembly 13 appropriately engages the lower end of the tubular appendage 2c of the body 2. In this way, the exposure of the helical spring and the member 12 to the flowing fluid is limited between the conduits 4 and 5.
  • FIGS 3 and 4 illustrate an embodiment according to the present invention.
  • the variant according to figures 3 and 4 differs from the embodiment according to figures 1 and 2 essentially in that the periphery of the obturator 17 is made integral with an elastically flexible and extensible tubular bellows 16 and with the annular gasket 3 locked between the elements 2a and 2b of the body 2 of the electric valve device.
  • the gasket 3, the bellows 16 and the obturator 17 are appropriately formed as a single element of a suitable material, for example elastomeric material.
  • elastomeric material element allows permanently protecting the helical spring 19 and the member 12 from the flowing fluid, with the electric valve device 1 open, between the conduits 4 and 5.
  • FIG. 5 to 7 illustrate a further variant of embodiment.
  • the obturators 17 and 18, respectively associated with the valve seats 7 and 8, are integrated in a single annular element 20 of elastomeric material.
  • Such element 20 comprises in particular an elastically flexible and extensible intermediate portion 21 that interconnects between the obturators 17 and 18 (see in particular figure 6 ).
  • the lower body 15 is mounted in an axially moveable manner relative to the upper body 14, and a helical spring 22 is interposed therebetween and tends to propel the body 15 away and downward, relative to the body 14.
  • the body 15 is made with a terminal head 15a and an overlying formation 15b, protruding radially outward in the manner of a flange, and the obturator 18 is inserted in the groove defined therebetween.
  • the electric valve device 1 operates substantially as in the embodiments described in relation to the previous figures.
  • Figure 8 illustrates a further variant of embodiment.
  • the variant of figure 8 corresponds to the variant of figures 5 to 7 in that the obturators 17 and 18, respectively associated with the valve seats 7 and 8, are integrated in a single annular element 20 of an elastomeric material and corresponding to the variant of figures 3-4 in that that the periphery of the obturator 17 is integrated with an elastically flexible and extensible tubular bellows 16 and with the annular gasket 3, locked between the elements 2a and 2b of the body 2 of the electric valve device.
  • the element 20 is constituted of a single body of elastomeric material, which integrates the obturator 17 and 18, the intermediate portion 21 that interconnects them, the gasket 3 and the bellows 16 that connects the gasket 3 to the obturators.
  • the electric valve device 1 operates substantially as in the embodiments described in relation to the previous figures.
  • the first obturator 17 and the second obturator 18 such that the first obturator 17 closes and/or opens the associated first valve seat 7 and the second obturator 18 respectively closes and/or opens the associated second valve seat (8) in a manner temporally staggered one with respect to the other.
  • Such configuration allows, with a repeated activation of the closing valve, a "self-cleaning" effect of the valve seat 7 or 8 to be achieved, through the removal of any particles which become lodged on the valve seat and compromise its seal.
  • such configuration allows a "pumping" function to dislodge any residues from the seats and remove them by activating the valve in a repeated way.
  • This type of activation allows for example for the closure of first the second seat 8 and then the first seat 7 to be achieved, pushing away the water and any impurities present in the volume between the two seats; a subsequent opening will then open first the second seat 8 then the first seat 7, generating a "piston pump” effect that allows any dirt from the seats to be removed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (9)

  1. Dispositif à électrovanne (1) comprenant
    un corps creux (2) ayant une entrée (4, 5) et une sortie (5, 4) pour l'écoulement d'un fluide, en particulier un liquide, entre lesquelles dans ledit corps (2) est définie une chambre (6) dans laquelle un premier siège de vanne (7) est fourni, le corps (2) comprenant deux parties (2a, 2b) arrimées l'une à l'autre avec interposition d'un élément d'étanchéité (3),
    un premier obturateur (17) monté de manière mobile dans ladite chambre (6) et coopérant avec ledit premier siège (7) pour commander la communication entre l'entrée (4, 5) et la sortie (5, 4), et
    un élément mobile (12) couplé audit premier obturateur (17) et apte à être déplacé en direction et en s'éloignant dudit (premier) siège de vanne (7) et conçu pour être commandé au moyen d'un actionneur à commande électrique (10) porté par ledit corps (2) ;
    dans lequel dans ledit corps (2) est fourni un second siège de vanne (8) décalé par rapport audit premier siège de vanne (7) le long de la direction de déplacement dudit premier obturateur (7), et
    dans lequel audit premier obturateur (17) est relié un second obturateur (18) apte à être déplacé en direction et en s'éloignant dudit second siège de vanne (8) ;
    l'agencement étant tel que lesdits premier et second obturateurs (17, 18) sont aptes à être déplacés conjointement en s'éloignant et en direction des sièges correspondants (7, 8), avec lesquels ils définissent une première vanne et une seconde vanne, respectivement, en série de manière fluidique l'une avec l'autre, les deux étant aptes à être commandées par l'intermédiaire dudit actionneur à commande électrique ;
    le dispositif à électrovanne (1) étant caractérisé en ce que
    ledit élément d'étanchéité (3) est réalisé en une pièce et couplé avec ledit premier obturateur (17) par l'intermédiaire d'un soufflet tubulaire élastiquement flexible et extensible (16), de sorte que ledit élément d'étanchéité (3), ledit soufflet (16) et ledit premier obturateur (17) sont formés de manière approprié comme un unique élément d'un matériau approprié et de manière à empêcher le contact dudit fluide avec ledit élément mobile (12) et avec des moyens élastiques (19) agencés pour pousser ledit premier obturateur (17) en direction du premier siège de vanne (7) associé.
  2. Dispositif à électrovanne selon la revendication 1, dans lequel ledit second obturateur (18) est formé de sorte que, par rapport audit premier obturateur (17), lorsque le premier obturateur (17) ferme le premier siège de vanne (7) associé à celui-ci, le second obturateur (18) ferme le second siège de vanne (8) associé à celui-ci en adoptant une configuration élastiquement déformée de sorte que ledit second obturateur (18) est élastiquement chargé contre le second siège (8) associé.
  3. Dispositif à électrovanne selon la revendication 1 ou la revendication 2, dans lequel ledit premier obturateur (17) possède des moyens élastiques associés (19) tendant à le pousser en direction du siège de vanne (7) associé, lesdits moyens élastiques (19) étant logés à l'intérieur d'une cavité (2c) définie par ledit corps (2) et ouverte en direction dudit premier obturateur (17), et dans lequel ledit premier obturateur possède un élément de support (14) associé adapté pour fermer ladite cavité (2c) lorsque ledit premier obturateur (17) est dans une position d'ouverture.
  4. Dispositif à électrovanne selon l'une des revendications précédentes, dans lequel l'aire surfacique de contact desdits obturateurs (17, 18) avec les sièges de vanne (7, 8) associés sont différentes l'une de l'autre.
  5. Dispositif à électrovanne selon l'une des revendications précédentes, dans lequel lesdits premier obturateur (17) et second obturateur (18) sont configurés d'une manière telle que le premier obturateur (17) ferme et/ou ouvre le premier siège de vanne (7) associé et le second obturateur (18) ferme et/ou ouvre respectivement le second siège de vanne (8) associé d'une manière temporellement décalée l'un par rapport à l'autre.
  6. Dispositif à électrovanne (1) comprenant
    un corps creux (2) ayant une entrée (4, 5) et une sortie (5, 4) pour l'écoulement d'un fluide, en particulier un liquide, entre lesquelles dans ledit corps (2) est définie une chambre (6) dans laquelle un premier siège de vanne (7) est fourni,
    un premier obturateur (17) monté de manière mobile dans ladite chambre (6) et coopérant avec ledit premier siège (7) pour commander la communication entre l'entrée (4, 5) et la sortie (5, 4), et
    un élément mobile (12) couplé audit premier obturateur (17) et apte à être déplacé en direction et en s'éloignant dudit (premier) siège de vanne (7) et conçu pour être commandé au moyen d'un actionneur à commande électrique (10) porté par ledit corps (2) ;
    dans lequel dans ledit corps (2) est fourni un second siège de vanne (8) décalé par rapport audit premier siège de vanne (7) le long de la direction de déplacement dudit premier obturateur (7), et
    dans lequel audit premier obturateur (17) est relié un second obturateur (18) apte à être déplacé en direction et en s'éloignant dudit second siège de vanne (8) ;
    l'agencement étant tel que lesdits premier et second obturateurs (17, 18) sont aptes à être déplacés conjointement en s'éloignant et en direction des sièges correspondants (7, 8), avec lesquels ils définissent une première vanne et une seconde vanne, respectivement, en série de manière fluidique l'une avec l'autre, les deux étant aptes à être commandées par l'intermédiaire dudit actionneur à commande électrique ;
    le dispositif à électrovanne (1) étant caractérisé en ce que lesdits premier et second obturateurs (17, 18) sont reliés à des corps de support (14, 15) respectifs qui sont aptes à coulisser l'un par rapport à l'autre et ayant des moyens élastiques (22) interposés entre eux, tendant à éloigner l'un de l'autre ; lesdits premier et second obturateurs (17, 18) étant intégrés à un corps (20) incluant une partie de jonction intermédiaire (21) qui est élastiquement flexible et extensible.
  7. Dispositif à électrovanne selon la revendication 6, dans lequel le corps (2) est réalisé en deux parties (2a, 2b) arrimées l'une à l'autre avec l'interposition d'un élément d'étanchéité (3) réalisé en une pièce et couplé avec lesdits premier obturateur (17) et second obturateur (18), de manière à empêcher le contact dudit fluide avec ledit élément mobile (12) et avec des moyens élastiques (19) agencés pour pousser ledit premier obturateur (17) en direction du premier siège de vanne (7) associé.
  8. Dispositif à électrovanne selon la revendication 6 ou 7, dans lequel l'aire surfacique de contact desdits obturateurs (17, 18) avec les sièges de vanne (7, 8) associés sont différentes l'une de l'autre.
  9. Dispositif à électrovanne selon l'une des revendications 6 à 8, dans lequel lesdits premier obturateur (17) et second obturateur (18) sont configurés d'une manière telle que le premier obturateur (17) ferme et/ou ouvre le premier siège de vanne (7) associé et le second obturateur (18) ferme et/ou ouvre respectivement le second siège de vanne (8) associé d'une manière temporellement décalée l'un par rapport à l'autre.
EP17713074.7A 2016-02-12 2017-02-13 Dispositif de soupape électrique, en particulier pour appareils électroménagers Active EP3414477B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17713074T PL3414477T3 (pl) 2016-02-12 2017-02-13 Urządzenie w postaci zaworu elektrycznego, w szczególności do przyrządów elektrycznych gospodarstwa domowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2016A000705A ITUB20160705A1 (it) 2016-02-12 2016-02-12 Dispositivo elettrovalvolare, in particolare per apparecchi elettrodomestici.
PCT/IB2017/050782 WO2017137961A1 (fr) 2016-02-12 2017-02-13 Dispositif de soupape électrique, en particulier pour appareils électroménagers

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Publication Number Publication Date
EP3414477A1 EP3414477A1 (fr) 2018-12-19
EP3414477B1 true EP3414477B1 (fr) 2020-04-29

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EP17713074.7A Active EP3414477B1 (fr) 2016-02-12 2017-02-13 Dispositif de soupape électrique, en particulier pour appareils électroménagers

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US (1) US10564659B2 (fr)
EP (1) EP3414477B1 (fr)
IT (1) ITUB20160705A1 (fr)
PL (1) PL3414477T3 (fr)
WO (1) WO2017137961A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018113748B3 (de) * 2018-06-08 2019-07-11 Leinemann Gmbh & Co. Kg Tankventil und Tank mit einem derartigen Ventil
EP3626948B1 (fr) * 2018-09-18 2021-06-16 Vitesco Technologies GmbH Soupape ainsi que procédé de fabrication d'une soupape
KR102666953B1 (ko) * 2019-11-28 2024-05-20 지오다노 컨트롤즈 에스.피.에이. 유체 바람직하게는 가스용 밸브

Citations (1)

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Publication number Priority date Publication date Assignee Title
US4376447A (en) * 1979-08-20 1983-03-15 Umc Industries, Inc. Hot water valve

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US3344807A (en) * 1965-08-27 1967-10-03 Lehrer Fritz Shut-off valve
US6047718A (en) * 1999-04-01 2000-04-11 Emersonelectric Co. Solenoid valve having coaxial armatures in a single coil design
JP3846287B2 (ja) * 2001-11-27 2006-11-15 三浦工業株式会社 バルブ
DE102004004708B3 (de) * 2004-01-30 2005-04-21 Karl Dungs Gmbh & Co. Kg Magnetventil
DE102004028968B4 (de) * 2004-06-16 2006-04-27 Karl Dungs Gmbh & Co. Kg Ventil mit sicherer Öffnungsanzeige
US7905254B2 (en) * 2004-07-29 2011-03-15 Miura Co., Ltd. Shut-off valve
JP2007032701A (ja) * 2005-07-27 2007-02-08 Miura Co Ltd 弁構造
DE102007036925A1 (de) * 2007-08-04 2009-02-05 Schaeffler Kg Elektromagnetische Stelleinheit
TW201136435A (en) * 2010-04-06 2011-10-16 Au Optronics Corp Pixel structure of electroluminescent display panel and method of making the same
EP2678592B1 (fr) * 2011-02-21 2016-12-07 Emerson Electric Co. Soupapes, dispositifs de détection de pression et dispositifs de commande destinés à des appareils de chauffage
JP6042352B2 (ja) * 2011-02-23 2016-12-14 ユニバーサル ディスプレイ コーポレイション 新規四座配位白金錯体

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US4376447A (en) * 1979-08-20 1983-03-15 Umc Industries, Inc. Hot water valve

Also Published As

Publication number Publication date
US10564659B2 (en) 2020-02-18
EP3414477A1 (fr) 2018-12-19
WO2017137961A1 (fr) 2017-08-17
PL3414477T3 (pl) 2020-11-02
ITUB20160705A1 (it) 2017-08-12
US20190018435A1 (en) 2019-01-17

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